/*
 * Copyright 2009-2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.security.kerberos.authentication;

import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.GrantedAuthority;

import java.util.Collection;

/**
 * <p>Holds the Username/Password as well as the JAAS Subject allowing
 * multi-tier authentications using Kerberos.</p>
 *
 * <p>The JAAS Subject has in its private credentials the Kerberos tickets
 * for generating new tickets against other service principals using
 * <code>KerberosMultiTier.authenticateService()</code></p>
 *
 * @author Bogdan Mustiata
 * @see KerberosAuthenticationProvider
 * @see KerberosMultiTier
 */
public class KerberosUsernamePasswordAuthenticationToken
        extends UsernamePasswordAuthenticationToken
        implements KerberosAuthentication {

    private final JaasSubjectHolder jaasSubjectHolder;

    /**
     * <p>Creates an authentication token that holds the username and password, and the Subject
     * that the user will need to create new authentication tokens against other services.</p>
     * @param principal
     * @param credentials
     * @param authorities
     * @param subjectHolder
     */
    public KerberosUsernamePasswordAuthenticationToken(Object principal,
                                                       Object credentials,
                                                       Collection<? extends GrantedAuthority> authorities,
                                                       JaasSubjectHolder subjectHolder) {
        super(principal, credentials, authorities);
        this.jaasSubjectHolder = subjectHolder;
    }

    @Override
    public JaasSubjectHolder getJaasSubjectHolder() {
        return jaasSubjectHolder;
    }
}
